I hate this argument. I may be annoyed at a percentage (far greater than imagined) of Bernie supporters that refused to vote or went Trump, but only Hillary can own that and, more importantly--Trump gets tremendous credit for grabbing them.
That is on Hillary and no one else. She and the dems alone
lost the most dependable voting block for the democratic party over the last ~century plus. She lost Obama's supporters, hard. There really is no other explanation. Dems have to own that and regroup or face the same political irrelevance that many assumed was coming to the republicans after this election.
The only positive that I can hope for out of Trump is that he acts as the bi-partisan enema that this country truly needs. If he can somehow be a moderate (and not let Pence do, well,
anyfuckingthing) and make enough reforms to WS and political entitlements, hell--something that actually helps these people for the first time ever, it would be a welcome change. I honestly hope he can do that and I think you should hope for that as well.